The Book of Menstruation (Kitab Al-Haid)

Muslim :: Book 3 : Hadith 579

Maimuna (the wife of the Holy Prophet) reported: The Messenger of Allah (may peace be upon him) contacted and embraced his wives over the waist-wrapper when they were menstruating.

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star